WO2003013184A1 - Electroacoustic public address unit with acoustic horn or waveguide - Google Patents
Electroacoustic public address unit with acoustic horn or waveguide Download PDFInfo
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- WO2003013184A1 WO2003013184A1 PCT/FR2002/002616 FR0202616W WO03013184A1 WO 2003013184 A1 WO2003013184 A1 WO 2003013184A1 FR 0202616 W FR0202616 W FR 0202616W WO 03013184 A1 WO03013184 A1 WO 03013184A1
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- waveguide
- profiling
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- plane
- public address
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
Definitions
- the invention relates to an electroacoustic public address unit with horn or acoustic waveguide. It relates more particularly to an improvement making it possible to adapt the dispersion characteristic of said horn or waveguide according to the configuration of the site where said sound unit is installed.
- electroacoustic horn or acoustic waveguide sound units are often used. These sound units are more particularly indicated for the reproduction of mid and high frequencies.
- An acoustic horn or waveguide is defined between a groove to which an electroacoustic transducer (i.e. a loudspeaker or a compression chamber motor) is connected and a mouth from which sound is propagates in the external environment.
- the shape of the horn or waveguide can be characterized by a function of expansion of its section between the throat and the mouth; it is the variation of said section considered along a propagation axis defined between said groove and said mouth. This function can be linear, exponential or arbitrary. It is generally increasing between the throat and the mouth.
- the three parameters mentioned above namely the surface of the throat, that of the mouth and the expansion function, determine the dispersion of the acoustic wave at the exit of the horn or waveguide. As a rule, dispersion increases with expansion. Dispersion control increases in the low frequency range with the surface of the mouth and increases in the high frequency range as the throat area decreases.
- the optimal dispersion characteristics vary.
- An important part of the sound engineer's know-how therefore consists in choosing the sound units whose dispersion characteristics are best suited. It must therefore have at its disposal a large number of sound units with very different characteristics, in particular with regard to the shapes and dimensions of the horns or acoustic waveguides.
- the invention overcomes this drawback.
- the basic idea of the invention consists in ensuring that the same sound unit can have adaptable dispersion characteristics by modifying one or more of the parameters defined above and in particular the expansion function of the horn or guide wave.
- the invention relates to an electroacoustic public address unit with horn or acoustic waveguide defined between a groove to which an electroacoustic transducer is connected and a mouth from which the sound propagates in the external environment, characterized in that it comprises at least one profiling piece constituting a removable dispersion shaper, shaped to be mounted on the inner wall of said horn or waveguide between said groove and said mouth, to modify the internal shape of said horn or guide 'wave.
- the profiling piece can be a kind of variable profile duct defining the new expansion function. It is introduced and fixed inside the horn or acoustic waveguide. According to a preferred embodiment, however, there are two profiling elements respectively adaptable on two opposite interior walls of the pavilion or waveguide.
- Such a profiling element or a set of profiling elements as defined above therefore makes it possible to change the dispersion characteristic of the sound unit.
- the latter can also be associated with several profiling elements or sets of profiling elements which can be chosen by the technician to optimize the dispersion characteristic according to the configuration of the operating site. For example, for a sound system of the type comprising a horn or waveguide having a plane of symmetry extending between the throat and the mouth, it will be possible to fix to the inner wall of the horn or waveguide two aforementioned profiling parts, symmetrical to one another and respectively adaptable on said inner wall at locations such that said plane of symmetry is kept.
- a public address unit that is to say at least capable of receiving one or more profiling parts defined above, will therefore be characterized in that said horn or waveguide comprises means for fixing at least one profiling element constituting a dispersion adapter.
- said horn or waveguide comprises means for fixing at least one profiling element constituting a dispersion adapter.
- FIG. 1 is a schematic exploded perspective view of a flag sound unit in the field of the invention and equipped with two complementary profiling parts to modify its intrinsic acoustic dispersion characteristics.
- FIG. 1 is a front view of one of the profiling parts
- Figure 5 is a perspective view similar to Figure 1 showing the two profiling parts in place inside the roof;
- the horn 13 is fixed relative to the transducer 15.
- the inner wall of the horn widens up to a mouth 19, here approximately rectangular, from which the sound propagates in the outside environment.
- a mouth 19 here approximately rectangular, from which the sound propagates in the outside environment.
- the pavilion therefore has a given expansion function, depending only on the shape and dimensions of its interior surface.
- This expansion function constitutes one of the parameters conditioning the dispersion characteristics of the horn (or of the acoustic waveguide if the electroacoustic transducer is not connected to a horn as shown).
- the public address unit is completed by at least one profiling piece 21 constituting a dispersion adapter and shaped to be mounted on the interior wall of the pavilion or waveguide, between the groove 17 and the mouth 19.
- two profiling parts 21a, 21b have been used, respectively adaptable on two opposite similar faces 25a, 25b of said inner wall of said pavilion.
- said pavilion has a plane of symmetry P extending between the throat and the mouth.
- the two profiling parts 21a, 21b are symmetrical and respectively adaptable on the two faces 25a, 25b, in locations such that said plane of symmetry P is kept.
- the plane of symmetry P of the interior wall of the pavilion as visible in FIG. 1, remains the plane of symmetry of the interior wall of the modified pavilion, when the latter comprises the two profiling parts 21a, 21b, as shown in Figure 5.
- each profiling piece has a first guide surface 27 substantially parallel to the plane of symmetry P, when the profiling piece is in place and a second guide surface 29 extending said first guide surface and defining approximately a dihedral. obtuse with it.
- said second guide surface is very slightly curved.
- each profiling piece 121a, 121b comprises a guide plane 30 inclined relative to a planar surface of the interior wall 13 of the pavilion.
- the guide plane and the flat surface meet in the vicinity of the groove 17.
- each profiling part 221a, 221b has a guide surface 32 with a curved profile comprising a groove portion 34 substantially parallel said plane of symmetry, in the immediate vicinity of the groove 17 of the pavilion and a mouth portion 36 moving away from the plane of symmetry from the groove portion.
- These two portions 34, 36 are connected to each other without a continuity solution.
- Different solutions can be envisaged for fixing the profiling pieces to the wall of the roof.
- the pavilion 13 (or waveguide) on the one hand and the or each profiling part 21a, 21b, on the other hand, comprise assembly means of the screw type nut. Consequently, holes made in the wall of the roof or in each profiling part can be provided with threaded portions or fitted with captive nuts.
- the holes in the profiling parts are here formed in small columns 40 which engage in the holes 42 in the wall of the roof. In the case where the nuts are integral with the roof, the screw heads come to rest on shoulders formed inside the holes made in the profiling parts.
- the pavilion (or the waveguide) on the one hand and / or the or each profiling piece, on the other hand comprise adhesive assembly means, for example strips double-sided adhesives.
- said pavilion (or the waveguide) on the one hand and / or the or each profiling piece, on the other hand comprise means for assembling magnetic elements.
- the pavilion is made of metal with magnetic properties (iron, steel)
- the profiling parts can be fitted with magnetic pads. The converse is possible. It is also possible to equip the roof and the profiling parts with such magnetized pads cooperating two by two, respectively.
- the positioning of the profiling pieces inside the pavilion modifies the expansion function of the latter by defining a new inner surface of the pavilion which replaces the surface original.
- This modification of the expansion function makes it possible to adapt the dispersion characteristics of the sound unit.
- any horn or wave guide sound unit defined between a groove to which an electroacoustic transducer is connected and a mouth from which sound propagates in an external environment is part of the field of the invention when said horn or waveguide linked to this transducer is provided with means making it possible to fix at least one profiling element constituting a dispersion adapter.
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- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Unité de sonorisation électroacoustique à pavillon ou guide d'onde acoustique Electroacoustic horn or acoustic waveguide unit
L'invention se rapporte à une unité de sonorisation électroacoustique à pavillon ou guide d'onde acoustique. Elle concerne plus particulièrement un perfectionnement permettant d'adapter la caractéristique de dispersion dudit pavillon ou guide d'onde en fonction de la configuration du site où ladite unité de sonorisation est installée.The invention relates to an electroacoustic public address unit with horn or acoustic waveguide. It relates more particularly to an improvement making it possible to adapt the dispersion characteristic of said horn or waveguide according to the configuration of the site where said sound unit is installed.
Dans les systèmes de sonorisation de plein air ou de grandes salles, on utilise souvent des unités de sonorisation électroacoustique à pavillon ou guide d'onde acoustique. Ces unités de sonorisation sont plus particulièrement indiquées pour la reproduction des fréquences moyennes et aiguës. Un pavillon ou guide d'onde acoustique est défini entre une gorge à laquelle se raccorde un transducteur électroacoustique (c'est-à-dire un haut-parleur ou un moteur à chambre de compression) et une bouche à partir de laquelle le son se propage dans le milieu extérieur. La forme du pavillon ou guide d'onde peut être caractérisée par une fonction d'expansion de sa section entre la gorge et la bouche ; il s'agit de la variation de ladite section considérée le long d'un axe de propagation défini entre ladite gorge et ladite bouche. Cette fonction peut être linéaire, exponentielle ou quelconque. Elle est généralement croissante entre la gorge et la bouche. Les trois paramètres précités, à savoir la surface de la gorge, celle de la bouche et la fonction d'expansion, déterminent la dispersion de l'onde acoustique à la sortie du pavillon ou guide d'onde. En règle générale, la dispersion augmente avec l'expansion. Le contrôle de la dispersion augmente dans le domaine des basses fréquences avec la surface de la bouche et il augmente dans le domaine des fréquences élevées lorsque la surface de la gorge diminue.In outdoor or large room public address systems, electroacoustic horn or acoustic waveguide sound units are often used. These sound units are more particularly indicated for the reproduction of mid and high frequencies. An acoustic horn or waveguide is defined between a groove to which an electroacoustic transducer (i.e. a loudspeaker or a compression chamber motor) is connected and a mouth from which sound is propagates in the external environment. The shape of the horn or waveguide can be characterized by a function of expansion of its section between the throat and the mouth; it is the variation of said section considered along a propagation axis defined between said groove and said mouth. This function can be linear, exponential or arbitrary. It is generally increasing between the throat and the mouth. The three parameters mentioned above, namely the surface of the throat, that of the mouth and the expansion function, determine the dispersion of the acoustic wave at the exit of the horn or waveguide. As a rule, dispersion increases with expansion. Dispersion control increases in the low frequency range with the surface of the mouth and increases in the high frequency range as the throat area decreases.
Or, selon la configuration du site à sonoriser, les caractéristiques de dispersion optimales varient. Une partie importante du savoir faire de l'ingénieur du son consiste donc à choisir les unités de sonorisation dont les caractéristiques de dispersion sont les mieux adaptées. Il doit donc avoir à sa disposition un grand nombre d'unités de sonorisation aux caractéristiques toutes différentes, notamment pour ce qui concerne les formes et dimensions des pavillons ou guides d'onde acoustique. L'invention permet de surmonter cet inconvénient. L'idée de base de l'invention consiste à faire en sorte qu'une même unité de sonorisation puisse avoir des caractéristiques de dispersion adaptables en modifiant un ou plusieurs des paramètres définis ci-dessus et notamment la fonction d'expansion du pavillon ou guide d'onde.However, depending on the configuration of the site to be sounded, the optimal dispersion characteristics vary. An important part of the sound engineer's know-how therefore consists in choosing the sound units whose dispersion characteristics are best suited. It must therefore have at its disposal a large number of sound units with very different characteristics, in particular with regard to the shapes and dimensions of the horns or acoustic waveguides. The invention overcomes this drawback. The basic idea of the invention consists in ensuring that the same sound unit can have adaptable dispersion characteristics by modifying one or more of the parameters defined above and in particular the expansion function of the horn or guide wave.
A cet effet, l'invention concerne une unité de sonorisation électroacoustique à pavillon ou guide d'onde acoustique défini entre une gorge à laquelle se raccorde un transducteur électroacoustique et une bouche à partir de laquelle le son se propage dans le milieu extérieur, caractérisée en ce qu'elle comporte au moins une pièce de profilage constituant un conformateur amovible de dispersion, conformée pour être montée sur la paroi intérieure dudit pavillon ou guide d'onde entre ladite gorge et ladite bouche, pour modifier la forme intérieure dudit pavillon ou guide d'onde.To this end, the invention relates to an electroacoustic public address unit with horn or acoustic waveguide defined between a groove to which an electroacoustic transducer is connected and a mouth from which the sound propagates in the external environment, characterized in that it comprises at least one profiling piece constituting a removable dispersion shaper, shaped to be mounted on the inner wall of said horn or waveguide between said groove and said mouth, to modify the internal shape of said horn or guide 'wave.
La pièce de profilage peut être une sorte de conduit à profil variable définissant la nouvelle fonction d'expansion. Il est introduit et fixé à l'intérieur du pavillon ou guide d'onde acoustique. Selon un mode de réalisation préféré, cependant, on prévoit deux éléments de profilage respectivement adaptables sur deux parois intérieures opposées du pavillon ou guide d'onde.The profiling piece can be a kind of variable profile duct defining the new expansion function. It is introduced and fixed inside the horn or acoustic waveguide. According to a preferred embodiment, however, there are two profiling elements respectively adaptable on two opposite interior walls of the pavilion or waveguide.
Un tel élément de profilage ou un jeu d'éléments de profilage tel que défini ci-dessus permet donc de changer la caractéristique de dispersion de l'unité de sonorisation. Cette dernière pourra aussi être associée à plusieurs éléments de profilage ou jeux d'éléments de profilage susceptibles d'être choisis par le technicien pour optimiser la caractéristique de dispersion en fonction de la configuration du site d'exploitation. A titre d'exemple, pour une unité de sonorisation du type comprenant un pavillon ou guide d'onde présentant un plan de symétrie s'étendant entre la gorge et la bouche, on pourra fixer à la paroi intérieure du pavillon ou guide d'onde deux pièces de profilage précitées, symétriques l'une de l'autre et respectivement adaptables sur ladite paroi intérieure en des emplacements tels que ledit plan de symétrie soit conservé.Such a profiling element or a set of profiling elements as defined above therefore makes it possible to change the dispersion characteristic of the sound unit. The latter can also be associated with several profiling elements or sets of profiling elements which can be chosen by the technician to optimize the dispersion characteristic according to the configuration of the operating site. For example, for a sound system of the type comprising a horn or waveguide having a plane of symmetry extending between the throat and the mouth, it will be possible to fix to the inner wall of the horn or waveguide two aforementioned profiling parts, symmetrical to one another and respectively adaptable on said inner wall at locations such that said plane of symmetry is kept.
Différentes formes de pièces de profilage possibles seront décrites ci- dessous. Une unité de sonorisation conforme à l'invention, c'est-à-dire au moins apte à recevoir une ou plusieurs pièces de profilage définies ci-dessus sera donc caractérisée en ce que ledit pavillon ou guide d'onde comporte des moyens pour fixer au moins un élément de profilage constituant un adaptateur de dispersion. Par exemple, on peut envisager de faire appel à des moyens d'assemblage du type vis-écrou ou à des moyens d'assemblage à adhésif ou encore à des moyens d'assemblage à éléments magnétiques.Different shapes of possible profiling parts will be described below. A public address unit according to the invention, that is to say at least capable of receiving one or more profiling parts defined above, will therefore be characterized in that said horn or waveguide comprises means for fixing at least one profiling element constituting a dispersion adapter. For example, it is conceivable to use assembly means of the screw-nut type or assembly means with adhesive or alternatively assembly means with magnetic elements.
L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront mieux à la lumière de la description qui va suivre, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :The invention will be better understood and other advantages of it will appear better in the light of the description which follows, given solely by way of example and made with reference to the appended drawings in which:
- la figure 1 est une vue schématique en perspective éclatée d'une unité de sonorisation à pavillon du domaine de l'invention et équipée de deux pièces de profilage complémentaires permettant de modifier ses caractéristiques de dispersion acoustique intrinsèques.- Figure 1 is a schematic exploded perspective view of a flag sound unit in the field of the invention and equipped with two complementary profiling parts to modify its intrinsic acoustic dispersion characteristics.
- la figure 2 est une vue de face de l'une des pièces de profilage ;- Figure 2 is a front view of one of the profiling parts;
- la figure 3 est une vue de profil de la même pièce ; et- Figure 3 is a side view of the same part; and
- la figure 4 est une vue en perspective de cette même pièce ; et- Figure 4 is a perspective view of the same part; and
- la figure 5 est une vue en perspective semblable à la figure 1 montrant les deux pièces de profilage en place à l'intérieur du pavillon ; et- Figure 5 is a perspective view similar to Figure 1 showing the two profiling parts in place inside the roof; and
- les figures 6 et 7 sont des schémas illustrant des variantes.- Figures 6 and 7 are diagrams illustrating variants.
Sur les figures 1 à 5, on a représenté une unité de sonorisation électroacoustique 11 à pavillon 13, ici relativement rigide, comprenant un transducteur électroacoustique 15 encore appelé générateur acoustique, raccordé à une ouverture de faible section 17 appelée gorge définie au fond du pavillon. Le pavillon 13 est fixe par rapport au transducteur 15. La paroi intérieure du pavillon s'élargit jusqu'à une bouche 19, ici approximativement rectangulaire, à partir de laquelle le son se propage dans le milieu extérieur. On peut définir un axe de propagation du son passant à la fois par le centre de la gorge et de la bouche. Un tel axe de propagation y'y est schématisé sur les figures 6 et 7. La variation de la section du pavillon le long de cet axe représente la fonction d'expansion définie plus haut. Tel quel, le pavillon a donc une fonction d'expansion donnée, dépendant uniquement de la forme et des dimensions de sa surface intérieure. Cette fonction d'expansion constitue l'un des paramètres conditionnant les caractéristiques de dispersion du pavillon (ou du guide d'onde acoustique si le transducteur électroacoustique n'est pas raccordé à un pavillon tel que représenté). Selon une caractéristique importante de l'invention, l'unité de sonorisation est complétée par au moins une pièce de profilage 21 constituant un adaptateur de dispersion et conformée pour être montée sur la paroi intérieure du pavillon ou guide d'onde, entre la gorge 17 et la bouche 19. En venant insérer et fixer dans le pavillon une ou plusieurs pièces de profilage de ce type, on peut adapter la forme intérieure du pavillon ou guide d'onde et par conséquent les caractéristiques de dispersion de celui-ci, en fonction de la configuration du site d'exploitation. Dans l'exemple, on a utilisé deux pièces de profilage 21a, 21b respectivement adaptables sur deux faces semblables opposées 25a, 25b de ladite paroi intérieure dudit pavillon. Dans l'exemple représenté, ledit pavillon présente un plan de symétrie P s'étendant entre la gorge et la bouche. Les deux pièces de profilage 21a, 21b sont symétriques et respectivement adaptables sur les deux faces 25a, 25b, en des emplacements tels que ledit plan de symétrie P soit conservé. Autrement dit, le plan de symétrie P de la paroi intérieure du pavillon, tel que visible sur la figure 1 reste le plan de symétrie de la paroi intérieure du pavillon modifié, lorsque celui-ci comporte les deux pièces de profilage 21a, 21b, comme représenté sur la figure 5.In Figures 1 to 5, there is shown an electroacoustic sound unit 11 with horn 13, here relatively rigid, comprising an electroacoustic transducer 15 also called acoustic generator, connected to a small section opening 17 called groove defined at the bottom of the horn. The horn 13 is fixed relative to the transducer 15. The inner wall of the horn widens up to a mouth 19, here approximately rectangular, from which the sound propagates in the outside environment. We can define an axis of sound propagation passing through both the center of the throat and the mouth. Such an axis of propagation y'y is shown diagrammatically in FIGS. 6 and 7. The variation in the section of the roof along this axis represents the expansion function defined above. As is, the pavilion therefore has a given expansion function, depending only on the shape and dimensions of its interior surface. This expansion function constitutes one of the parameters conditioning the dispersion characteristics of the horn (or of the acoustic waveguide if the electroacoustic transducer is not connected to a horn as shown). According to an important characteristic of the invention, the public address unit is completed by at least one profiling piece 21 constituting a dispersion adapter and shaped to be mounted on the interior wall of the pavilion or waveguide, between the groove 17 and the mouth 19. By coming to insert and fix in the pavilion one or more profiling pieces of this type, one can adapt the interior shape of the pavilion or waveguide and consequently the dispersion characteristics of the latter, depending the configuration of the operating site. In the example, two profiling parts 21a, 21b have been used, respectively adaptable on two opposite similar faces 25a, 25b of said inner wall of said pavilion. In the example shown, said pavilion has a plane of symmetry P extending between the throat and the mouth. The two profiling parts 21a, 21b are symmetrical and respectively adaptable on the two faces 25a, 25b, in locations such that said plane of symmetry P is kept. In other words, the plane of symmetry P of the interior wall of the pavilion, as visible in FIG. 1, remains the plane of symmetry of the interior wall of the modified pavilion, when the latter comprises the two profiling parts 21a, 21b, as shown in Figure 5.
Dans l'exemple, chaque pièce de profilage comporte une première surface de guidage 27 sensiblement parallèle au plan de symétrie P, lorsque la pièce de profilage est en place et une seconde surface de guidage 29 prolongeant ladite première surface de guidage et définissant approximativement un dièdre obtus avec celle-ci. Néanmoins, ladite seconde surface de guidage est très légèrement courbe.In the example, each profiling piece has a first guide surface 27 substantially parallel to the plane of symmetry P, when the profiling piece is in place and a second guide surface 29 extending said first guide surface and defining approximately a dihedral. obtuse with it. However, said second guide surface is very slightly curved.
Dans l'exemple schématisé à la figure 6, chaque pièce de profilage 121a, 121b comporte un plan de guidage 30 incliné par rapport à une surface plane de la paroi intérieure 13 du pavillon. Le plan de guidage et la surface plane se rejoignent au voisinage de la gorge 17. En revanche, dans la variante de la figure 7, chaque pièce de profilage 221a, 221b présente une surface de guidage 32 à profil courbe comprenant une portion de gorge 34 sensiblement parallèle audit plan de symétrie, au voisinage immédiat de la gorge 17 du pavillon et une portion de bouche 36 s'éloignant du plan de symétrie à partir de la portion de gorge. Ces deux portions 34, 36 se raccordent l'une à l'autre sans solution de continuité. Différentes solutions peuvent être envisagées pour fixer les pièces de profilage à la paroi du pavillon. Dans l'exemple des figures 1 à 5, le pavillon 13 (ou guide d'onde) d'une part et la ou chaque pièce de profilage 21a, 21b, d'autre part, comportent des moyens d'assemblage du type vis-écrou. Par conséquent, des trous ménagés dans la paroi du pavillon ou dans chaque pièce de profilage peuvent être pourvus de portions filetées ou équipées d'écrous prisonniers. Les trous des pièces de profilage sont ici ménagés dans des colonnettes 40 venant s'engager dans les trous 42 de la paroi du pavillon. Dans le cas où les écrous sont solidaires du pavillon, les têtes de vis viennent reposer sur des épaulements ménagés à l'intérieur des trous pratiqués dans les pièces de profilage.In the example shown diagrammatically in FIG. 6, each profiling piece 121a, 121b comprises a guide plane 30 inclined relative to a planar surface of the interior wall 13 of the pavilion. The guide plane and the flat surface meet in the vicinity of the groove 17. On the other hand, in the variant of FIG. 7, each profiling part 221a, 221b has a guide surface 32 with a curved profile comprising a groove portion 34 substantially parallel said plane of symmetry, in the immediate vicinity of the groove 17 of the pavilion and a mouth portion 36 moving away from the plane of symmetry from the groove portion. These two portions 34, 36 are connected to each other without a continuity solution. Different solutions can be envisaged for fixing the profiling pieces to the wall of the roof. In the example of FIGS. 1 to 5, the pavilion 13 (or waveguide) on the one hand and the or each profiling part 21a, 21b, on the other hand, comprise assembly means of the screw type nut. Consequently, holes made in the wall of the roof or in each profiling part can be provided with threaded portions or fitted with captive nuts. The holes in the profiling parts are here formed in small columns 40 which engage in the holes 42 in the wall of the roof. In the case where the nuts are integral with the roof, the screw heads come to rest on shoulders formed inside the holes made in the profiling parts.
Selon une variante, on peut envisager que le pavillon (ou le guide d'onde) d'une part et/ou la ou chaque pièce de profilage, d'autre part, comportent des moyens d'assemblage à adhésif, par exemple des bandes adhésives double face. Selon encore une autre variante, on peut envisager que ledit pavillon (ou le guide d'onde) d'une part et/ou la ou chaque pièce de profilage, d'autre part, comportent des moyens d'assemblage à éléments magnétiques. Par exemple, si le pavillon est en métal à propriétés magnétiques (fer, acier), les pièces de profilage peuvent être équipées de pastilles aimantées. La réciproque est possible. On peut aussi équiper le pavillon et les pièces de profilage de telles pastilles aimantées coopérant deux à deux, respectivement.According to a variant, it is conceivable that the pavilion (or the waveguide) on the one hand and / or the or each profiling piece, on the other hand, comprise adhesive assembly means, for example strips double-sided adhesives. According to yet another variant, it can be envisaged that said pavilion (or the waveguide) on the one hand and / or the or each profiling piece, on the other hand, comprise means for assembling magnetic elements. For example, if the pavilion is made of metal with magnetic properties (iron, steel), the profiling parts can be fitted with magnetic pads. The converse is possible. It is also possible to equip the roof and the profiling parts with such magnetized pads cooperating two by two, respectively.
Comme on peut le voir en considérant les figures 5 à 7, le positionnement des pièces de profilage à l'intérieur du pavillon modifie la fonction d'expansion de celui-ci en définissant une nouvelle surface intérieure du pavillon qui vient se substituer à la surface d'origine. Cette modification de la fonction d'expansion permet d'adapter les caractéristiques de dispersion de l'unité de sonorisation. Bien entendu, toute unité de sonorisation à pavillon ou guide d'onde défini entre une gorge à laquelle se raccorde un transducteur électroacoustique et une bouche à partir de laquelle le son se propage dans un milieu extérieur fait partie du domaine de l'invention dès lors que ledit pavillon ou guide d'onde lié à ce transducteur est pourvu de moyens permettant de fixer au moins un élément de profilage constituant un adaptateur de dispersion. As can be seen by considering Figures 5 to 7, the positioning of the profiling pieces inside the pavilion modifies the expansion function of the latter by defining a new inner surface of the pavilion which replaces the surface original. This modification of the expansion function makes it possible to adapt the dispersion characteristics of the sound unit. Of course, any horn or wave guide sound unit defined between a groove to which an electroacoustic transducer is connected and a mouth from which sound propagates in an external environment is part of the field of the invention when said horn or waveguide linked to this transducer is provided with means making it possible to fix at least one profiling element constituting a dispersion adapter.
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/484,465 US7178629B2 (en) | 2001-07-23 | 2002-07-22 | Electroacoustic public address unit with acoustic horn or waveguide |
| EP02772446A EP1417858B8 (en) | 2001-07-23 | 2002-07-22 | Electroacoustic public address unit with acoustic horn |
| JP2003518224A JP4124727B2 (en) | 2001-07-23 | 2002-07-22 | Electroacoustic loudspeaker with horn or acoustic waveguide |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0109798A FR2827732B1 (en) | 2001-07-23 | 2001-07-23 | ELECTROACOUSTIC SOUND UNIT WITH PAVILION OR ACOUSTIC WAVEGUIDE |
| FR01/09798 | 2001-07-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003013184A1 true WO2003013184A1 (en) | 2003-02-13 |
Family
ID=8865798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2002/002616 Ceased WO2003013184A1 (en) | 2001-07-23 | 2002-07-22 | Electroacoustic public address unit with acoustic horn or waveguide |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7178629B2 (en) |
| EP (1) | EP1417858B8 (en) |
| JP (1) | JP4124727B2 (en) |
| CN (1) | CN100481968C (en) |
| FR (1) | FR2827732B1 (en) |
| WO (1) | WO2003013184A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20060637A1 (en) * | 2006-11-30 | 2008-06-01 | B & C Speakers S P A | ACOUSTIC WAVE GUIDE AND ELECTROACOUSTIC SYSTEM INCLUDING SUCH WAVE GUIDE |
| DE202007015371U1 (en) | 2007-11-03 | 2009-03-19 | Schwarzmüller, Heinz | speaker |
| USD590287S1 (en) * | 2008-05-01 | 2009-04-14 | Bartlett John K | High frequency horn assembly |
| US8130994B2 (en) * | 2008-06-17 | 2012-03-06 | Harman International Industries, Incorporated | Waveguide |
| US7845462B2 (en) * | 2008-08-07 | 2010-12-07 | Moore Dana A | Wide frequency range horn with modular method for reducing diffraction effects |
| KR101192910B1 (en) | 2008-08-14 | 2012-10-18 | 하만인터내셔날인더스트리스인코포레이티드 | Phase plug and acoustic lens for direct radiating loudspeaker |
| USD797083S1 (en) * | 2013-07-10 | 2017-09-12 | Stanley G. Coates | Sound deflecting apparatus |
| KR101714960B1 (en) * | 2016-02-19 | 2017-03-09 | 이종배 | Horn speaker having control module for radiation angle |
| CN106231481B (en) * | 2016-08-03 | 2019-02-22 | 广州杰士莱电子有限公司 | A kind of waveguide |
| US10623840B2 (en) * | 2017-03-24 | 2020-04-14 | Harman International Industries, Incorporated | Loudspeaker acoustic diversity aperture frame |
| JP6824821B2 (en) * | 2017-05-29 | 2021-02-03 | Toa株式会社 | speaker |
| KR101857390B1 (en) * | 2017-06-26 | 2018-05-11 | 김옥경 | Apparatus for controlling of directivity pattern of column speaker |
| CN109547900B (en) * | 2018-11-22 | 2020-10-30 | 斯贝克电子（嘉善）有限公司 | Horn |
| JP7224948B2 (en) * | 2019-02-13 | 2023-02-20 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ | Speaker device and area reproduction device |
| US12407980B2 (en) | 2023-03-01 | 2025-09-02 | Qsc, Llc | Customizable waveguides and associated systems and methods |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US462155A (en) | 1891-10-27 | Territory | ||
| FR1079073A (en) * | 1953-02-26 | 1954-11-25 | Bouyer Paul & Cie | Loud speaker |
| US4628155A (en) * | 1982-07-12 | 1986-12-09 | Philippe Robineau | Electroacoustic motor for horns |
| US5020630A (en) | 1989-12-08 | 1991-06-04 | Electro-Voice, Inc. | Loudspeaker and horn therefor |
| US6112847A (en) * | 1999-03-15 | 2000-09-05 | Clair Brothers Audio Enterprises, Inc. | Loudspeaker with differentiated energy distribution in vertical and horizontal planes |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US272866A (en) * | 1883-02-27 | Speaking-trumpet for receiving-telephones | ||
| US982732A (en) * | 1910-06-08 | 1911-01-24 | Henry G Lehnert | Musical instrument. |
| US1352291A (en) * | 1919-09-29 | 1920-09-07 | Long Frank Benajah | Articulator for phonographs |
| US1438712A (en) * | 1922-03-01 | 1922-12-12 | Mosmann Reinhard | Sound-reproducing machine |
| US1661525A (en) * | 1926-07-27 | 1928-03-06 | Deerfoot William | Tone modifier |
| US1729336A (en) * | 1927-05-02 | 1929-09-24 | John P France | Attachment for musical instruments |
| US2621553A (en) * | 1951-10-22 | 1952-12-16 | Daoust Pierre | Brass instrument cone-type mute |
| US4050541A (en) * | 1976-04-21 | 1977-09-27 | Altec Corporation | Acoustical transformer for horn-type loudspeaker |
| US4178829A (en) * | 1978-05-24 | 1979-12-18 | Wolford John W | Power tube for flared bell musical instruments |
| JPS5919679B2 (en) * | 1979-06-08 | 1984-05-08 | 松下電器産業株式会社 | horn speaker |
| JPS6052196A (en) * | 1983-09-01 | 1985-03-25 | Pioneer Electronic Corp | Ribbon type horn speaker |
| US4685532A (en) * | 1986-02-21 | 1987-08-11 | Electro-Voice, Inc. | Constant directivity loudspeaker horn |
| US5117462A (en) * | 1991-03-20 | 1992-05-26 | Jbl Incorporated | Phasing plug for compression driver |
| US5398992A (en) * | 1992-02-05 | 1995-03-21 | The Walt Disney Company | Seat having sound system with acoustic waveguide |
| US6081602A (en) * | 1997-08-19 | 2000-06-27 | Meyer Sound Laboratories Incorporated | Arrayable two-way loudspeaker system and method |
| US6394223B1 (en) * | 1999-03-12 | 2002-05-28 | Clair Brothers Audio Enterprises, Inc. | Loudspeaker with differential energy distribution in vertical and horizontal planes |
-
2001
- 2001-07-23 FR FR0109798A patent/FR2827732B1/en not_active Expired - Lifetime
-
2002
- 2002-07-22 EP EP02772446A patent/EP1417858B8/en not_active Expired - Lifetime
- 2002-07-22 JP JP2003518224A patent/JP4124727B2/en not_active Expired - Fee Related
- 2002-07-22 WO PCT/FR2002/002616 patent/WO2003013184A1/en not_active Ceased
- 2002-07-22 CN CNB028146778A patent/CN100481968C/en not_active Expired - Fee Related
- 2002-07-22 US US10/484,465 patent/US7178629B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US462155A (en) | 1891-10-27 | Territory | ||
| FR1079073A (en) * | 1953-02-26 | 1954-11-25 | Bouyer Paul & Cie | Loud speaker |
| US4628155A (en) * | 1982-07-12 | 1986-12-09 | Philippe Robineau | Electroacoustic motor for horns |
| US5020630A (en) | 1989-12-08 | 1991-06-04 | Electro-Voice, Inc. | Loudspeaker and horn therefor |
| US6112847A (en) * | 1999-03-15 | 2000-09-05 | Clair Brothers Audio Enterprises, Inc. | Loudspeaker with differentiated energy distribution in vertical and horizontal planes |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2827732B1 (en) | 2004-01-23 |
| CN1535554A (en) | 2004-10-06 |
| FR2827732A1 (en) | 2003-01-24 |
| JP2004537939A (en) | 2004-12-16 |
| CN100481968C (en) | 2009-04-22 |
| US20040206572A1 (en) | 2004-10-21 |
| EP1417858A1 (en) | 2004-05-12 |
| EP1417858B1 (en) | 2012-10-17 |
| JP4124727B2 (en) | 2008-07-23 |
| EP1417858B8 (en) | 2012-12-05 |
| US7178629B2 (en) | 2007-02-20 |
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